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Memory system and operating method thereof using a bitmap for filtering of logical addresses

  • US 10,310,769 B2
  • Filed: 04/11/2016
  • Issued: 06/04/2019
  • Est. Priority Date: 11/18/2015
  • Status: Active Grant
First Claim
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1. A memory system comprising:

  • a memory device comprising a plurality of memory blocks each having a plurality of pages; and

    a controller suitable for storing data in a first memory block among the memory blocks, storing map data of the data in a second memory block among the memory blocks, and scanning the map data regarding logical information of the data in response to a command,wherein the controller generates a bit map for the logical information of the data when storing the map data,wherein the controller includes;

    a first part suitable for loading partial map data from the second memory block,a second part, including a memory, suitable for storing generated map data including the bit map for the logical information of the data before storing the generated map data in the second memory block, anda third part suitable for checking the second part in response to the command to filter by scanning the first part when the second part includes no map data corresponding to the data based on the bit map stored in the memory.

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